Support for Dynamic '+' Email Aliases in Office 365
I am familiar with using a plus sign following my email alias to create dynamic unique addresses for a Gmail account. e.g. email@example.com will arrive at my Gmail mailbox, where I can then apply rules based on the 'To:' address. See this page for details: https://support.google.com/mail/answer/22370
I tested this on my Office 365 address and it works, but only for email addresses in my parent domain. Using the aliases on subdomain addresses results in a 'recipient not found' NDR.
Does anyone out there have more information on this feature or if it even is one for 365 / Exchange?
Thank you for the responses to the call for beta testers. We will notify those who have been accepted.
We expect this feature to be available to all by the end of August.
Oshri Shaul commented
I will be more than happy to join my tenant in the beta tests.
I've sent an email as requested here before, but I haven't received any reply regarding that topic.
Joe Croteau commented
I would like to beta test
James Russell commented
I would like to test this if there are beta testers still needed.
Kieran Jacobsen commented
Keen to join the list of beta/preview users when this becomes available.
Awesome, looking forward to see this released. I'm available to test this feature :)
great, glad this is coming. glad to help test
Kreera House commented
@Sean - Excellent! How do we sign up to be beta testers?
Please ensure that when viewing an email in Outlook that we will be able to see the dynamic alias that the email was sent to.
Currently it's not even possible to see the standard alias that an email was sent to without inspecting the headers.
Be nice to hear if this is still expected to be on time
Anthony Spruyt commented
This needs to be fast tracked!
Jon Singh commented
Whats the status of this? Desperately needing this now... Hoping you'll have other aliases also...
What is the status of this?
Henry van Megen commented
nice to see that Microsoft is ALMOST on the cutting edge with features that have existed for over 12 years now... ( https://tools.ietf.org/html/rfc5322 )
Is there any way to sign up for a preview?
The possibility to generate infinitive email addresses with plus sing in the address ... the forward rule should ignore whatever comes after plus sign and route the email to the master inbox.
David Benham commented
I use this feature often as a developer. I always need unique email addresses for testing and evaluation.
Q3 in 2020? Ugh, that's a long wait. Glad it's in the works.
Q3 2020? Good lord...
The announcement at Ignite has an associated EHLO blog post here that you can reference: https://techcommunity.microsoft.com/t5/Exchange-Team-Blog/Exchange-Transport-News-from-Microsoft-Ignite-2019/ba-p/993417
Sean S., is there something published that documents that this feature is coming to O365? We are running into an issue with a web software product we use having mixed support for + in e-mail addresses and I pointed out to them that this is coming to Office 365, and they are saying that it isn't an IEEE standard for e-mail so they don't need to support it. Certainly, the potential in 2020 that everyone using O365 will be able to use dynamic aliases will drastically increase the number of users who might enter their e-mail address with a + so I'd like to share whatever is available from Microsoft on this coming feature.
Jason Pearce commented
The "fun" thing about + addresses and . addresses is attempting to unsubscribe from mass-email services like ExactTarget, Constant Contact, Salesforce, etc.
You cannot just ask them to unsubscribe firstname.lastname@example.org. They must also unsubscribe nearly an unlimited number of + and . email aliases too. E.g.:
Those mass-email companies should support wildcard requests for their global blocklists. Something like: